body,html{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}
:root{
    font-size: 14px;
    font-family: "Helvetica Neue", Helvetica, Arial,"PingFang SC","阿里巴巴普惠体","思源黑体 CN","微软雅黑","Microsoft YaHei", sans-serif;
    box-sizing: border-box;
}
.wrapper {
    margin: 0 auto;
    width: 1300px;
}
